The configuration (σ2s) 2 (σ2s*) 2 (π2py) 1 (π2px) 1 is the molecular orbital description for the ground state of

The answer is B2. The configuration has six electrons. B2 is the only answer choice that has six valence electrons. Boron is a chemical element with symbol B and atomic number 5. Shaped completely by cosmic ray spallation and supernovae and not by stellar nucleosynthesis, it is a low-abundance element.